MULTI-DIRECTION VEHICLE CONTROL SENSING

• US 20090222167A1
• Filed: 05/12/2009
• Published: 09/03/2009
• Est. Priority Date: 07/17/2006
• Status: Active Grant

• Current Assignee: Hyster-Yale Group Inc.
• Original Assignee: NMHG Oregon, LLC
• Inventors: Rose, Timothy L., Johnson, Gerald A., Goodwin, Christopher J., Davis, James W., Crowell, Brian R., McGoldrick, Kevin J.
• Granted Patent: US 8,392,049 B2
• Time in Patent Office: Days
• US Class Current: 701/41
• CPC Class Codes: B62D 15/00 Steering not otherwise provided for
• CPC Class Codes: B62D 6/00 Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits means for initiating a change in direction B62D1/00; steering valves B62D5/06; combined with means for inclining the vehicle body or wheels on bends B62D9/00
• CPC Class Codes: B62D 9/00 Steering deflectable wheels not otherwise provided for steering positon indicators B62D15/02
• CPC Class Codes: B66F 9/07568 Steering arrangements
• CPC Class Codes: B66F 9/0759 Details of operating station, e.g. seats, levers, operator platforms, cabin suspension
• CPC Class Codes: B66F 9/20 Means for actuating or controlling masts, platforms, or forks power take-off from vehicle transmissions, combined with vehicle propulsion systems B60K
• CPC Class Codes: Y10T 74/20 Control lever and linkage systems
• CPC Class Codes: Y10T 74/20012 Multiple controlled elements
• CPC Class Codes: Y10T 74/20207 Multiple controlling elements for single controlled element

Abstract

A vehicle includes a first control configured to operate the vehicle from a first operator position facing a front of the vehicle and a second control configured to operate the vehicle from a second operator position facing a rear of the vehicle. The vehicle further includes a processor configured to monitor for an operator presence in the first operator position or the second operator position and receive a vehicle operating request, wherein the operator presence is monitored independent of receiving the vehicle operating request. The processor is further configured to enable either the first control or the second control and select a vehicle operating parameter associated with the vehicle operating request, wherein the vehicle operating parameter varies according to which control is enabled.

Claims

1. A method, comprising:

monitoring an operator presence at one or more control handles of a vehicle, wherein the vehicle comprises two or more control handles, and wherein at least one control handle is configured to detect the operator presence;

receiving a vehicle operating command from a control selected from the group consisting of the two or more control handles; and

enabling the selected control to command the vehicle.

2. The method according to claim 1, wherein a first control handle is associated with a first operator position, wherein a second control handle is associated with a second operator position, and wherein the second control handle comprises a sensor configured to detect the operator presence.

3. The method according to claim 2, wherein the second operator position is substantially opposite to that of the first operator position.

4. The method according to claim 2, wherein the vehicle operating parameter comprises a maximum vehicle travel speed in a primary direction of travel associated with the selected control, and wherein the maximum travel speed associated with the first control handle is different than the maximum travel speed associated with the second control handle.

5. The method according to claim 2, wherein the sensor is configured to detect the operator presence independently of the received vehicle operating command.

6. The method according to claim 1, wherein the vehicle operating parameter comprises a steering orientation of the vehicle, and wherein the steering orientation reverses depending on which control is enabled.

7. The method according to claim 6, further comprising:

receiving a clockwise steering command;

steering the vehicle in a clockwise sense in a first direction of travel in response to the clockwise steering command when the first control handle is enabled; and

steering the vehicle in a counterclockwise sense in the first direction of travel in response to the clockwise steering command when the second control handle is enabled.

8. The method according to claim 7, wherein the steering command is received from a steering apparatus, and wherein the steering apparatus is located on an opposite side of the vehicle from the selected control.

9. A vehicle, comprising:

a first control configured to operate the vehicle from a first operator position facing a front of the vehicle;

a second control configured to operate the vehicle from a second operator position facing a rear of the vehicle; and

a processor, wherein the processor is configured to;

monitor for an operator presence in the first operator position or the second operator position;

receive a vehicle operating request, wherein the operator presence is monitored independent of receiving the vehicle operating request;

enable either the first control or the second control; and

select a vehicle operating parameter associated with the vehicle operating request, wherein the vehicle operating parameter varies according to which control is enabled.

10. The vehicle according to claim 9, wherein the first control is approximately located in the front of the vehicle, and wherein the second control is approximately located in the rear of the vehicle.

11. The vehicle according to claim 9, wherein the operating parameter comprises a maximum rate of acceleration of the vehicle, and wherein the maximum rate of acceleration associated with the first control is different than the maximum rate of acceleration associated with the second control.

12. The vehicle according to claim 9, further comprising a steering apparatus configured to provide a steering command, wherein the vehicle turns left in a first direction of travel in response to the steering command when the first control is enabled, and wherein the vehicle turns right in the first direction of travel in response to the same steering command when the second control is enabled.

13. The vehicle according to claim 9, further comprising a braking system, wherein the operating parameter comprises a maximum braking force of the braking system, and wherein the maximum braking force associated with the first control being enabled is different than the maximum braking force associated with the second control being enabled.

14. The vehicle according to claim 9, further comprising one or more sensors configured to detect the operator presence, wherein the enabled control is the control associated with the operator position where the operator presence is detected.

15. A computer-readable medium having stored thereon, computer-executable instructions that, if executed by a system, cause the system to perform a method comprising:

detecting an operator presence at a control selected from a group consisting of a first control and a second control;

receiving a vehicle command from the selected control;

comparing the vehicle command with a state of vehicle operation to determine if a vehicle is in a ready state;

selecting a vehicle operating parameter associated with the vehicle command;

enabling the selected control; and

implementing the vehicle command when the vehicle is in the ready state, wherein the vehicle operating parameter is modified according to which of the first control or the second control is enabled.

16. The computer-readable medium according to claim 15, wherein the method further comprises:

disabling the control which is not selected, wherein the disabled control is not enabled to request vehicle acceleration.

17. The computer-readable medium according to claim 16, wherein the disabled control is configured to command a braking system to brake the vehicle when the selected control is enabled.

18. The computer-readable medium according to claim 15, wherein the method further comprises:

monitoring a continued operator presence at the enabled control; and

disabling the enabled control when the continued operator presence is not detected for a predetermined time period.

19. The computer-readable medium according to claim 15, wherein the vehicle operating parameter comprises a steer sense orientation, and wherein the method further comprises:

reversing the steer sense orientation associated with a same direction of vehicle travel according to which control is enabled.

20. The computer-readable medium according to claim 19, wherein the vehicle comprises one or more steer tires, and wherein the method further comprises:

automatically commanding the one or more steer tires to a default steering angle when the steer sense orientation is reversed.

21. The computer-readable medium according to claim 15, wherein the vehicle operating parameter comprises a maximum steer angle of the vehicle, and wherein the maximum steer angle associated with the first control is different than the maximum steer angle associated with the second control.